What the EST-CRC is built to do
The EST-CRC is a rope chain machine in the chain making machines range. A Chinese rope chain making machine for very fine high-density rope chains.
The machine draws wire from the spool, forms each link, closes it and advances the chain in one continuous cycle. Because link geometry is set mechanically rather than by hand, output stays dimensionally consistent across a shift — the property that makes chinese rope chain saleable by weight and by metre.
Its rated wire range is 0.11 – 0.35 mm. That range is a hard limit, not a guideline: below it the link will not close reliably, above it the forming tooling is the wrong geometry. Machines are therefore chosen by wire diameter first and by style second, as set out in the chain making machine selection guide.
Capability in practice
The figures below are the ones that decide whether this machine suits a given job. The full table is in the specifications section above.
| Parameter | EST-CRC | What it decides |
|---|---|---|
| Wire diameter | 0.11 – 0.35 mm | Hard limit set by the forming tooling — outside this range the link will not close correctly. |
Where it fits in a workshop
Chain machines run in their own bay: they are heavy, they run continuously, and they are fed from wire stock rather than from the bench. A production cell normally pairs the forming machine with an inline chain welding source, and finishes with hammering or diamond-cut faceting.
- Gold chain — 9k to 22k alloys within the rated wire range.
- Silver chain — sterling and fine silver.
- Stainless chain — fashion and unisex ranges.
- Brass chain — samples, costume and plated lines.
- Production line duty — continuous running as part of a chain cell.
Installation and site requirements
Most delayed commissionings come down to three things: the supply, the cooling and the route into the room. Check these against the site before the machine ships.
- Electrical supply — this machine expects 220–240V 50/60Hz. Confirm the socket, the breaker rating and whether the site is 50 Hz or 60 Hz.
- Weight — 185 kg. Check floor loading and the lifting route; anything over 150 kg normally needs a pallet truck and a clear doorway.
- Footprint — 105 × 90 × 110 mm. Allow clearance behind and beside the machine for service access.
Operator handover covers the software, the parameter set for the specific alloy and wire in use, and the first production run. If any of the figures above sit close to your limits, say so on the quotation request and we will confirm before the order is placed.
How the EST-CRC compares
Other rope chain machine models in the range, so you can see where this one sits rather than reading its specification in isolation.
| Model | Power | Wire / field | Cooling | Weight |
|---|---|---|---|---|
| EST-CRC this page | — | 0.11 – 0.35 mm | — | 185 kg |
| EST-C-RCM | — | 0.25 – 0.8 mm | — | 170 kg |
Overview
The EST-CRC is a rope chain machine built for chain forming in jewelry manufacturing, supplied by Sawyers Jewelry. A Chinese rope chain making machine for very fine high-density rope chains. It is designed for reliable daily production with consistent, repeatable results.
Key Capabilities
- Wire diameter range: 0.11–0.35 mm
- Chain style: Chinese-rope
Typical Applications
The EST-CRC is well suited to gold chain production, silver chain production, stainless steel chain production, brass / fashion chain production, and full chain production line. Settings can be adapted to your metal mix and output requirements.
Supported Metals
The machine processes gold, silver, stainless steel and brass. Working within the rated wire range protects link consistency and extends machine life.
Ordering & Support
Sawyers Jewelry supplies the EST-CRC with options for voltage and tooling, plus export documentation and after-sales support. Use the inquiry form on this page for a tailored quotation.